22222080 has 144 divisors (see below), whose sum is σ = 78980160. Its totient is φ = 5916672.

The previous prime is 22222063. The next prime is 22222087. The reversal of 22222080 is 8022222.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34239 + ... + 34881.

Almost surely, 2^22222080 is an apocalyptic number.

22222080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22222080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39490080).

22222080 is an abundant number, since it is smaller than the sum of its proper divisors (56758080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22222080 is an equidigital number, since it uses as much as digits as its factorization.

22222080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 22222080 is about 4714.0301229415. The cubic root of 22222080 is about 281.1436219916.

The spelling of 22222080 in words is "twenty-two million, two hundred twenty-two thousand, eighty".